Physical Properties of Sediments on the Northern Continental Shelf of the South China Sea |
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Authors: | Bo Lu Gangxian Li Shaojian Huang Chuanrong Li |
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Institution: | 1. Laboratory of Marginal Sea Geology , South China Sea Institute of Oceanology, Chinese Academy of Sciences , Guangzhou, P.R. China salu@scsio.ac.cn;3. Laboratory of Marginal Sea Geology , South China Sea Institute of Oceanology, Chinese Academy of Sciences , Guangzhou, P.R. China |
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Abstract: | ABSTRACT Using physical (acoustical engineering mechanics and scanning electron microscope) and other technical methods, is study makes a comprehensive analysis of the structural characteristics and engineering mechanics properties of sediments, the sediment structure, microstructure and their classification characteristics and in the light of the physical-mechanical characteristic parameters, the relations between the grain contact, grain accumulation, and porosity with the physical-mechanical characteristics of sediment, and reports the relationship between the acoustic physical parameters and the stress-strain properties of sediment. Results show that there are six structural types in the shelf seabed sediment of the northern South China Sea, among which, the mixed contact structural type sediment has a higher compressive strength and a higher sound velocity than others, and that in the shallow seabed there exists a mesoscale structure with high and low velocity layers. |
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Keywords: | the northern continental shelf of the South China Sea seabed sediment structural characteristics engineering geology physical properties longitudinal velocity transverse velocity |
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